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MHT CET Physics question

PhysicsThermodynamicsMHT CET

In a certain process, 400 cal of heat is supplied to a system and at the same 105 J of mechanical work was done on the system. The increase in its internal energy is

Answer: (D)

Solution

Work done on the system is J cal (J = 4.2), so cal; 375 cal

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Question ID VK-065990